What would you use in Houston Texas to do a re-plumb in a 60's home?
Water Service -- PVC / Water Lines -- CPVC / DWV(drain,waste,vent) PVC or ABS. The reason for all plastic is you are in a southern costal area and cpvc cost less than copper. You could go with a copper water service & water lines it's more costly.
Or pex could also be an option for water lines. But totally agree with the plastics either way.
If you don't learn something new everyday at work, it's not even worth going.